Indomitable

• (a.) Not to be subdued; untamable; invincible; as, an indomitable will, courage, animal.
Found on http://thinkexist.com/dictionary/meaning/indomitable/

indomitable

never-say-die adjective impossible to subdue
Found on https://www.encyclo.co.uk/local/20974

Indomitable

In·dom'i·ta·ble adjective [ Latin indomitabilis ; prefix in- not + domitare , intens. from domare to tame. See Tame .] Not to be subdued; untamable; invincible; as, an indomitable will, courage, animal.
Found on http://www.encyclo.co.uk/webster/I/46

Indomitable

HMS Indomitable was a British fleet aircraft carrier of 23000 tons displacement launched in 1940. HMS Indomitable was powered by six Admiralty 3-drum type boilers providing a top speed of 31 knots. She was armed with sixteen 4.5 inch dual-purpose guns plus 40 mm and 20 mm anti-aircraft guns. She carried a crew of 1600 and sixty aircraft.
Found on http://www.probertencyclopaedia.com/browse/RI.HTM

indomitable

impossible to subdue
Found on https://www.vocabulary.com/lists/151263

indomitable

impossible to subdue
Found on https://www.vocabulary.com/lists/578271

indomitable

not easily discouraged or subdued 
Found on http://www.graduateshotline.com/list.html

indomitable

[adj] - impossible to subdue
Found on http://www.webdictionary.co.uk/definition.php?query=indomitable
No exact match found